package demo2;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: Administrator
 * Date: 2023-07-02
 * Time: 17:34
 */
public class Comtuper {

    public void open(){
        System.out.println("打开电脑");
    }
    public void close(){
        System.out.println("关闭电脑");
    }

    public void useDevice(USB usb){
        usb.openDevice();

        if(usb instanceof Keyboard){
            Keyboard keyboard = (Keyboard)usb;
            keyboard.input();
        } else if (usb instanceof Mouse) {
            Mouse mouse = (Mouse) usb;
            mouse.click();
        }
        usb.closeDevice();
    }

    public static void main(String[] args) {
        Comtuper comtuper = new Comtuper();
        comtuper.useDevice(new Keyboard());
        System.out.println("====================");
        comtuper.useDevice(new Mouse());
    }
}
